Not all downloaded songs are able to play...

[Rowsdower]

I made a playlist, downloaded it to my Android device, and notice that not all songs are playing correctly.  First, I noticed that only songs that I have hard copies of will download (which I guess is because I'm not a premium member), and that's fine.  But, even some songs that I DO have hard copies of, legal copies, which I ripped from a CD to my computer, will not play after being downloaded as part of a playlist...  One entire album that I added to a playlist and downloaded will not play.

The strangest thing is that Spotify mobile shows this album as being downloaded in the playlist, and when I try to play it, it shows it as being played... but no sound ever comes out.  It is like this for the entire album.  Other albums that I have hard copies of and add to playlists do not behave like this.

If someone could help me fix this, I'd apreciate the help; or if its a problem on Spotify's end, PLEASE fix this.

Here are my specs and file types of the above mentioned problem:

Computer

MacBook Pro, running Snow Leopard (10.6.8)

Songs imported from iTunes (10.6.3)

File Types

mp3: MPEG audio file (MPEG-1, Layer 3)

286 kbps (VBR)

44.100 kHz